html,
body {
  margin: auto;
  text-align: center;
  color: #333;
}
body::before {
  content: "";
  position: fixed;
  z-index: -1;
  background: url(images/bpic4834.jpg) top center / cover no-repeat;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}
img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
canvas {
  bottom: 0;
  left: 0;
  position: fixed;
  opacity: 0.2;
  right: 0;
  top: 0;
  z-index: -1;
}
canvas#c1 {
  opacity: 0;
}
canvas#c2 {
  background: #000;
}
@keyframes show {
  0% {
    opacity: 0;
    transform: translateY(0);
  }
  100% {
    opacity: 1;
    transform: translateY(-10px);
  }
}
.container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.container a {
  color: #666;
  text-decoration: none;
}
.container .head {
  padding-top: 50px;
}
.container .head h1 {
  margin: 50px;
  opacity: 0;
  animation: show 1.5s 0s forwards;
}
.container .head p {
  opacity: 0;
  animation: show 1.5s 0.5s forwards;
}
.container .head p .say {
  font-size: 24px;
  background: linear-gradient(to right, #c33764, #1d2671);
  -webkit-background-clip: text;
  color: transparent;
  font-weight: 700;
  font-family: "Georgia";
}
.container .example {
  flex: 1;
  margin: 50px 100px;
  display: grid;
  justify-content: center;
  grid-template-columns: repeat(auto-fill, 360px);
}
.container .example .case {
  margin: 20px auto;
  position: relative;
  opacity: 0;
  animation: show 1.5s 1s forwards;
}
.container .example .case a {
  overflow: hidden;
  border-radius: 5px;
  display: inline-block;
  width: 270px;
  height: 180px;
  transition: 0.3s;
}
.container .example .case a:hover {
  transform: translateY(-5px);
  box-shadow: 0px 2px 4px rgba(51, 51, 51, 0.3);
}
.container .footer {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
}
.container .footer .row {
  margin: 5px;
}
.container .footer .row a {
  transition: 0.3s;
  border-radius: 5px;
  width: 20px;
  height: 20px;
  display: inline-block;
  padding: 5px;
  margin: 0 2px;
}
.container .footer .row a:hover {
  background-color: rgba(255, 255, 255, 0.3);
}
